class Teacher < ActiveRecord::Base

  validates :display_name, :presence => true

  before_validation :derp_display_name, :on => :create

  def derp_display_name
    if self[:display_name] == nil
      self[:display_name] = "kU9E8Pa@UkU@umuyUt&e4*Vec*=s7uKE"
    end
  end

  def display_name
    self[:display_name == "kU9E8Pa@UkU@umuyUt&e4*Vec*=s7uKE" ? "" : self[:display_name]
  end

end